Weir-meter construction and inlet regulation.



D. R. YARNALL.

WEIR METER COiJSTRUCUON AND HJLET REGULATION.

APPUCATION HLED MAYZT. I913.

Patented Nov. 2, 1915.

2 SHEETSSHEET 1.

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D. R. YAHNALL. WEIR METER comsmucnow AND INLET REGULAHON.

APPLlCATlON FILED MAY 27, 1913. 1 159 147 Patented Nov. 2, 1915.

2 SHEETS-SHEET 2.

To (/1? whom it may (wlz fie 1i knewn that A,

L, a citizen or the Prestsn street. eounfiy of .Phiiadelpne .7 syivania, have invented useful iVeir-lvieter Car iieguiaiion, of which specification.

The purpose of my a seif contained weir me under back pressure er 7 .v taeene pump and; a feed 's; its catch basin as j protect against flooding @1- che from the catch basin.

Further purposes of m invez cwnnection with the above, It part of the. sturage beimv v the receiving or Wei: charm); the storage Without iDCl'QziQiil' space required, t0 reduce -KS r fluctuation of the catch biib y to flow of water ovefile weir (1m val 6f Water from the vpump and to-thus smwtii Gut showing Weir operation 1 tuatien in a. system Whe Wei; tank-1s ces'itruiie ,Vitiioui a iier incipies invoiveu. Figure 1 is :1 tion, partly in; e

invention. 1 upon line QH mentary section Of hereofq E1211 sect-ion partiv form of my inv My invention relate? rams intended ,speciaii waiter heeier. As he v to mei'er inlet reguiu frem outletregm itio v rather than rombi'na 9r 0'! er zmterier r rhegiro? anyfdesired pressure or vacuum conditions within the commimicating chambers 5, 6 and 7.

My invention isdirected toward the storage of the'water overflowing from the weir and the controlf'of the water entering and leaving the system by reason of'the height of the waterstored. I prefer to make the catch basin proper, ifewthedistance between the rear Wall 31 and"'the front tank Wall 32 quite short, in order to save floor space by reducing the total'length oi the tank. At the same time I am cnabledto get a much larger storage space for the overflow water than would be available from the normal catch basin by utilizing the space beneath the weir chamber as part of the effective,

catch basin, to form the storage space indicated at 33, providing a large pool of water having its surface not only permissibly below the level of the bottom 34 of the weir tank but preferably maintained below that level at some point, as 35, in order to, avoid quick changes of surface level and the consequent rapid fluctuation in regulation of the fiowof 'wateriinto and out of the meter. (I providesufficient catch basin spacebe flier/sen the higher level of the water below the .w'eir at which inlet of water is shut off automatically and the-level of the bottom-10f the weir notch at 36 to receive all the fiow' from the weir chamber above this level 36 after inlet of Water? to the weifichamber" has been stopped, thus'insuring against submergence of the weir-opening from the catch basin side.

I have stiffened the Weir chamber by a transverse partition 37 which is 'apertured M38 and is united tothe frameof the casing' and to the bottom plates 39 by insertion of the tank. The rod is bushed at 4:5 where itemerges from the pocket and is supported.

of the plate edge between theflanges 40 of thetank and Weir chamber bottom.

I'control the influx and outflow of waterto and from the Weir by'the float 41 and the following construction. The rod 42,- connected with the floatat one end, is secured at the other end to an end of a rod 43, which end extends within a pocket 44 forming part there and at any suitable point or points 4'6 so as to be free to rock slightly with the. .rise and fall of the float.

At any suitable points along the rod 1 place operating mechanism for opening and closing valves a-ccording to the movement of this rod; and, the articular mechanism=which I have illustratcd for-this pur ose comprises a plurality of levers d7, 48 an 4:9. Theleveif'l is connerted by link50; with lever 51, by-which automatic valve 52 is made toopcn the inlet from the feed water heater, as-the level 35 recedes and close it as the level rise s The movement in eitherfdire'ctijon maybe made automatic and-nthei "lever-:may then .causel' the automatic movement of opening or closing. In any event the valve and connections v constitute a controller for the inlet water operated by the float to regulate the height of the water in the catch basin.

The lever 48 is connected to a link 53, having lost motion at 5 the other end of the link being connected with a rod 55 by which automatic valve 56 is opened when the level at 35 has become extremely low. This automatic valve isnormally kept closed, even when the pin 57 is not in contact with the upper end 58 of the slot 5i.

The lever 49 is connected by link 59 with rod 60 by which the preferably automatic valve 61 is opened as the lei'el of Water at 35 rises, causing the pump to resume operation. In this case also the pump valve} and connections constitute a controller operated by the float to regulate the height of. The height of water in the catch basin.

level at 35 therefore, by. whatever connec changes of position as accommodate changed requirements m use. screws in the lever arms and couplings in I have shown set the links for this purpose.

In the form in Fig.4, I have shown an open feed water heater 63 of conventional type, having doors 64, 65, 66 for access thereto, inlet 6? for steam, normally exhaust steam, and separator 68. The make-up water is here supplied through pipe 69 and is automatically controlled by valve70, lever 71, link 72, lever 73 and float or other means inside the heater, sq that the quantity ofmakeof waterwithin the heater. -74: further- .protects the: heater.- I have shown a vacuum break at 75 and a so-called free on atmospheric exhaust at which, however, as is well known, is frequently conup water admitted is regulated by the height:

The overflow trolled toperinit or provide for pressure within the heater corresponding to the maximum temperature of feed water which the heater is intended to deliver. This heater, so far as described, difiers in no particu lars from existing heaters and need not be changed in anyway for the accommodzv tion of my invention.

I have. aimed to illustrate the applicabilityhere-of regulation of water flowing froni'anfopen/ feed water heater to a weir meme? is einfiained at pump regurei and indegaendii basin be-exiended As-m this 3 Y9 and cateh basin 3 pressure as that of 7 0r ether means 0f -ciitians Within the osed hereinbefere Labia float 81 transrate 0:?" flew to the i Kimble mechanism described filiiy ei ions. Tile-float '1 the weir 6113111 ?ed at 85 and 2% 88 far ant rod 853 acting peiiei by fleet 0f the fbiie We TIP?) Jump basin through maintain 0G1.- passing from the mefie Ehat c that it is obiaion in level of 21., The level of is ciosed preferabiji '01 all a; the Wate? 1e weir 'ghgmber my inventien whai: e seeure' by Let-- stated, a leseci casing concach basin, 1 an outies, 91 mg the weir 2' the channel fer the meter, a 1101*- 0 reguia'e the at bperaieci iiy '3 and. connecreciuce the '51 from valve OP EHZRgfGT source 0! s catch basin In a de supply therefer, a. nermaiiy open said. conduit whens i enters the We bar, afloat in the c; tioiis between the flea reduce the valve ape through the valve q ereases in the e vaive opening 3 of liquid the ca? being so set that catch-basin iiquiriu the ievei 0f i the weirchasm 3. In a 1 Weir meter we catch basin mitted t0 the valve in the liquid admiiiififi 'eatchimsin liqai erating the liquid admit verse preps basin liquid 4. In 2 d meter casing 2316; 1a wish portion is in fre'nt of tended benea'iih fer the W851i witizin he 62 by 12 1 at position by basin. i 5. In a pressm'ewig h a cs storage com .s, a

for, a 50st epemseu by ti in the storage 20:11pm" an intake water s0 ec'ii compartmen" intake and c0 partial; t0 the Le cnmpsrimen'i.

6. In 21 d9 mete casing in cempart a waive in en make-up wate closed d age comm yam-{me i them with diiferences in height of the water- -level in the storage compartment.

'7. In a device of the character stated, a receiving and measuring compartment, a re.- turn water connection therefor, a make-up water connection therefor, a valve in each connection, the valve in the make-up water connection being normally closed, a storage compartment, a discharge connection therefrom, a float -in the storage compartment, connections from the float to the two valves tending to close and open them with differences in height of the water level in the storage compartment and a lost motion device whereby the make-up water valve is not opened until the level of the water in the storage compartment becomes low.

' 8. In a device of the-:character stated, a meter casing having a weir chamber and a catch basin chamber extended beneath the weir chamber, an inlet for the weir chamber, a valve in the inlet, a float in the catch basin and connections between the float and valve-adapted to maintain the level of the water in the catch basin normally below the 1 bottom of the weir chamber.

9. In'a device of the character stated, a

meter casing having a Weir chamber and a catch basin extended Within the space heneath the weir chamber, a float in the catch 'basin, an inlet for the weir chamber, anormally open valve in the inlet and connections between the float and valve adapted to maintain the level of the water normally below that of the bottom of the weir cham her, the propo'rtioning of the catch basin and weir parts being such that there is room in the catch basin for all the'water in the weir' chamber above the Weir at the time that the inlet valve is closed. v

10. In a device of the character stated, a

,Wir chamber, acatch basin. therefor located in front of the weir above. and below the level of the bottom of the. weir chamber and extending also back of the weir beneath .the weir chamber, a source of main liquid supply for the weir chamber, a valve regulating the flow of liquid through this supply, a float in the catch basin, connections between the float and valve, whereby to maintain the catch basin liquid level below the bottom of the weir chamber. in normal operation and a register float responsive to connection for the catchbasin; a normally open valve for regulating the quantity of fluid passing through one of said connections and means set'in operation by variation of the fluid level in the catch basin for reducing or increasing the opening of the valve. 12. In a device of the character stated, a weir chamber, a chamber receiving the weir flow, located in front of the weir above and below the level of the bottom of'the weir chamber and extended beneath the weir chamber to provide storage thereunder for the water measured, a main inlet connection for the weir chamber, a discharge connection for the chamber below the weir and means closing the inlet connection for regulating the height of water in the 'cham ber above the weir by the level of the water in the chamber below the weir.

DAVID ROBERT YARNALL. Witnesses Win STEELL JACKSON, HELEN I. KAUFFMAN. 

